Changes

  }}</ref>.     

  }}</ref>.     

Esto ya sería suficiente para llamar nuestra atención sobre un fenómeno extraordinariamente explicativo llamado ''Gate Control''. If a child gets hit in the leg while playing soccer, in addition to crying, the first thing he does is to rub extensively the painful area so that the pain decreases. The child does not know the ‘Gate Control’, but unconsciously activates an action that, by stimulating the tactile receptors, closes the gate at the entrance of the nociceptive input of the C fibres, consequently decreasing the pain; the phenomenon was discovered only in 1965 by Ronald Melzack and Patrick Wall<ref>{{cita libro  

Esto ya sería suficiente para llamar nuestra atención sobre un fenómeno extraordinariamente explicativo llamado ''Control de puerta''. If a child gets hit in the leg while playing soccer, in addition to crying, the first thing he does is to rub extensively the painful area so that the pain decreases. The child does not know the ‘Gate Control’, but unconsciously activates an action that, by stimulating the tactile receptors, closes the gate at the entrance of the nociceptive input of the C fibres, consequently decreasing the pain; the phenomenon was discovered only in 1965 by Ronald Melzack and Patrick Wall<ref>{{cita libro  

  | autore = Melzack R

  | autore = Melzack R

  | titolo =  The McGill Pain Questionnaire: major properties and scoring methods  

  | titolo =  The McGill Pain Questionnaire: major properties and scoring methods